Add 509 and 12:
509
+ 12
____
521
509 + 12 = 521
Answer:
It is D Because I'm soo Smart And the Question is easy
Answer:
c=b-x/d hope it helps..............
Answer:

Step-by-step explanation:
Factor each half of the expression separately:

Since both 4k² and 7 are being multiplied by (7k-6), we can combine them to get:

I’m sorry what subject is this I will still help u